tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * drivers/leds/leds-cm-x270.c
3 *
4 * Copyright 2007 CompuLab Ltd.
5 * Author: Mike Rapoport <mike@compulab.co.il>
6 *
7 * Based on leds-corgi.c
8 * Author: Richard Purdie <rpurdie@openedhand.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 */
15
16#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/platform_device.h>
19#include <linux/leds.h>
20
21#include <mach/hardware.h>
22#include <mach/pxa-regs.h>
23
24#define GPIO_RED_LED (93)
25#define GPIO_GREEN_LED (94)
26
27static void cmx270_red_set(struct led_classdev *led_cdev,
28 enum led_brightness value)
29{
30 if (value)
31 GPCR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
32 else
33 GPSR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
34}
35
36static void cmx270_green_set(struct led_classdev *led_cdev,
37 enum led_brightness value)
38{
39 if (value)
40 GPCR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
41 else
42 GPSR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
43}
44
45static struct led_classdev cmx270_red_led = {
46 .name = "cm-x270:red",
47 .default_trigger = "nand-disk",
48 .brightness_set = cmx270_red_set,
49};
50
51static struct led_classdev cmx270_green_led = {
52 .name = "cm-x270:green",
53 .default_trigger = "heartbeat",
54 .brightness_set = cmx270_green_set,
55};
56
57#ifdef CONFIG_PM
58static int cmx270led_suspend(struct platform_device *dev, pm_message_t state)
59{
60 led_classdev_suspend(&cmx270_red_led);
61 led_classdev_suspend(&cmx270_green_led);
62 return 0;
63}
64
65static int cmx270led_resume(struct platform_device *dev)
66{
67 led_classdev_resume(&cmx270_red_led);
68 led_classdev_resume(&cmx270_green_led);
69 return 0;
70}
71#endif
72
73static int cmx270led_probe(struct platform_device *pdev)
74{
75 int ret;
76
77 ret = led_classdev_register(&pdev->dev, &cmx270_red_led);
78 if (ret < 0)
79 return ret;
80
81 ret = led_classdev_register(&pdev->dev, &cmx270_green_led);
82 if (ret < 0)
83 led_classdev_unregister(&cmx270_red_led);
84
85 return ret;
86}
87
88static int cmx270led_remove(struct platform_device *pdev)
89{
90 led_classdev_unregister(&cmx270_red_led);
91 led_classdev_unregister(&cmx270_green_led);
92 return 0;
93}
94
95static struct platform_driver cmx270led_driver = {
96 .probe = cmx270led_probe,
97 .remove = cmx270led_remove,
98#ifdef CONFIG_PM
99 .suspend = cmx270led_suspend,
100 .resume = cmx270led_resume,
101#endif
102 .driver = {
103 .name = "cm-x270-led",
104 .owner = THIS_MODULE,
105 },
106};
107
108static int __init cmx270led_init(void)
109{
110 return platform_driver_register(&cmx270led_driver);
111}
112
113static void __exit cmx270led_exit(void)
114{
115 platform_driver_unregister(&cmx270led_driver);
116}
117
118module_init(cmx270led_init);
119module_exit(cmx270led_exit);
120
121MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
122MODULE_DESCRIPTION("CM-x270 LED driver");
123MODULE_LICENSE("GPL");
124MODULE_ALIAS("platform:cm-x270-led");